diff --git a/botx/clients/methods/base.py b/botx/clients/methods/base.py
index 5c1fa4f8..7d1b699b 100644
--- a/botx/clients/methods/base.py
+++ b/botx/clients/methods/base.py
@@ -176,7 +176,10 @@ def build_serialized_dict(
                 exclude_none=True,
             ),
         )
-        serialized_dict.update(self.dict(include={"file"}))
+
+        # Because exclude_none removes empty file key on message update
+        if hasattr(self, "file") and self.file is None:  # type: ignore # noqa: WPS421
+            serialized_dict["file"] = None
 
         return serialized_dict
 
diff --git a/docs/changelog.md b/docs/changelog.md
index 31c67d24..39a8cf95 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,3 +1,10 @@
+## 0.21.2 (Aug 3, 2021)
+
+### Fixed
+
+* `File` is now serializing when sending message.
+
+
 ## 0.21.1 (Jul 28, 2021)
 
 ### Fixed
diff --git a/pyproject.toml b/pyproject.toml
index 2e94942d..973edc5c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "botx"
-version = "0.21.1"
+version = "0.21.2"
 description = "A little python framework for building bots for eXpress"
 license = "MIT"
 authors = [